Giannetto, the Mad Heir

Whenever an opponent cast a creature spell,
you may pay {1}. If you do, create a food token.
Whenever an opponent cast an artifact,
enchantment or planeswalker spell, you may pay {1}. If you do, create two treasure token.
Whenever an opponent cast an instant or sorcery spell, you may pay {1}. If you do, create a clue
token.